/usr/share/samba/setup/provision_configuration_basedn.ldif is in samba 2:4.3.8+dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | ###############################
# Configuration Naming Context
###############################
dn: ${CONFIGDN}
objectClass: top
objectClass: configuration
msDS-NcType: 0
nTSecurityDescriptor:: ${DESCRIPTOR}
instanceType: 13
|